<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <script src="./vue3基础源码/vue3.js"></script>
    <script>
        const app = Vue.createApp({
            data(){
                return {
                    content:123
                }
            },
            provide:{
                count:1
            },
            template:`
                <div-one />
            `
        })

        app.component("divOne",{
            template:`<div-two />`
        })

        app.component("divTwo",{
            template:`<div-four />`
        })

        app.component("divFour",{
            inject:['count'],
            template:`<div>{{count}}</div>`
        })

        app.mount("#root");
    </script>
</body>
</html>